Final Fantasy Exploit Teaches 32-bit Integer Math
One of the fun things about old video games, besides their obvious nostalgia, is that some of the more popular games have been pried apart and tinkered with for years, leading to a lot of new “development” within the games. This often uncovers some hidden gems that gamers might not have had any knowledge of during the game’s heyday, like this coding oddity found in Final Fantasy 7 that illustrates a lot about how 32-bit processors do math.
The original PlayStation used a 32-bit RISC processor, but the most significant bit could be used for integer signing. This means that …read more
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